In which of the following complex ions is the | vedclass

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(A) In the $MnO_4^-$ complex ion,the oxidation state of $Mn$ is $+7$. The electronic configuration of $Mn$ $(Z=25)$ is $[Ar] 3d^5 4s^2$. For $Mn^{7+}$

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$MnO_4^-$

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(A) In the $MnO_4^-$ complex ion,the oxidation state of $Mn$ is $+7$. The electronic configuration of $Mn$ $(Z=25)$ is $[Ar] 3d^5 4s^2$. For $Mn^{7+}$,the configuration becomes $[Ar] 3d^0 4s^0$. Thus,the $d$-orbitals of the central metal atom are empty. In $MnO_4^-$,the hybridization is $sd^3$ (or $d^3s$ depending on the bonding model used for tetrahedral geometry).

In which of the following complex ions is the central metal atom's $d$-orbital devoid of electrons?

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